package com.test.restruant.controller;

import com.alibaba.dubbo.config.annotation.Reference;
import com.alipay.api.AlipayApiException;
import com.alipay.api.AlipayClient;
import com.alipay.api.DefaultAlipayClient;
import com.alipay.api.internal.util.AlipaySignature;
import com.alipay.api.request.AlipayTradePagePayRequest;
import com.sun.org.apache.xpath.internal.operations.Mod;
import com.test.restruant.pojo.Bill;
import com.test.restruant.service.BillService;
import com.test.restruant.util.AdminConstant;
import com.test.restruant.util.AlipayConfig;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.UnsupportedEncodingException;
import java.math.BigDecimal;
import java.net.URLEncoder;
import java.text.DecimalFormat;
import java.util.*;

@Controller

public class OrderController {
    @Reference
    private BillService billService;

    @RequestMapping("order.html")
    public String list(Model model) {
        List<Bill> bills = billService.getBillList();
        model.addAttribute("bills", bills);
        return "order";
    }

    @RequestMapping(value = "order.html",params = "act=pay")
    public void pay(Integer id, HttpServletRequest request, HttpServletResponse response) {
        Bill bill = billService.getBillById(id);
        response.setCharacterEncoding("utf-8");
        response.setContentType("text/html;charset=" + AlipayConfig.charset);
        //验证是否已经支付过了,略
//        if(bill.getStatus()==2){
//
//        }
        //获得初始化的AlipayClient
        try {
            PrintWriter out = response.getWriter();
            AlipayClient alipayClient = new DefaultAlipayClient(AlipayConfig.gatewayUrl, AlipayConfig.app_id, AlipayConfig.merchant_private_key, "json", AlipayConfig.charset, AlipayConfig.alipay_public_key, AlipayConfig.sign_type);

            //设置请求参数
            AlipayTradePagePayRequest alipayRequest = new AlipayTradePagePayRequest();
            alipayRequest.setReturnUrl(AlipayConfig.return_url);
            alipayRequest.setNotifyUrl(AlipayConfig.notify_url);

            //商户订单号，商户网站订单系统中唯一订单号，必填
            String out_trade_no = bill.getOrderNum()+ "";
            //付款金额，必填
            String total_amount = String.valueOf(bill.getAmount() / 100.0);
            //订单名称，必填
            String subject = "餐厅账单";
            //商品描述，可空
            String body = "";

            alipayRequest.setBizContent("{\"out_trade_no\":\"" + out_trade_no + "\","
                    + "\"total_amount\":\"" + total_amount + "\","
                    + "\"subject\":\"" + subject + "\","
                    + "\"body\":\"" + body + "\","
                    + "\"product_code\":\"FAST_INSTANT_TRADE_PAY\"}");

            //若想给BizContent增加其他可选请求参数，以增加自定义超时时间参数timeout_express来举例说明
            //alipayRequest.setBizContent("{\"out_trade_no\":\""+ out_trade_no +"\","
            //		+ "\"total_amount\":\""+ total_amount +"\","
            //		+ "\"subject\":\""+ subject +"\","
            //		+ "\"body\":\""+ body +"\","
            //		+ "\"timeout_express\":\"10m\","
            //		+ "\"product_code\":\"FAST_INSTANT_TRADE_PAY\"}");
            //请求参数可查阅【电脑网站支付的API文档-alipay.trade.page.pay-请求参数】章节

            //请求
            String result = alipayClient.pageExecute(alipayRequest).getBody();
            System.out.println(result);
            //输出

            out.println(result);
        } catch (Exception e) {
            e.printStackTrace();
        }
        //return "order";
    }

    @RequestMapping("callback.html")
    public void callback(HttpServletRequest request, HttpServletResponse response) {

        //获取支付宝POST过来反馈信息
        try {
            PrintWriter out = response.getWriter();
            Map<String, String> params = new HashMap<String, String>();
            Map<String, String[]> requestParams = request.getParameterMap();
            for (Iterator<String> iter = requestParams.keySet().iterator(); iter.hasNext(); ) {
                String name = (String) iter.next();
                String[] values = (String[]) requestParams.get(name);
                String valueStr = "";
                for (int i = 0; i < values.length; i++) {
                    valueStr = (i == values.length - 1) ? valueStr + values[i]
                            : valueStr + values[i] + ",";
                }
                //乱码解决，这段代码在出现乱码时使用
                System.out.println(valueStr);
                //valueStr = new String(valueStr.getBytes("ISO-8859-1"), "utf-8");
                //System.out.println(valueStr);
                params.put(name, valueStr);
            }
            System.out.println(params);

            boolean signVerified = AlipaySignature.rsaCheckV1(params, AlipayConfig.alipay_public_key, AlipayConfig.charset, AlipayConfig.sign_type); //调用SDK验证签名

            //——请在这里编写您的程序（以下代码仅作参考）——

	/* 实际验证过程建议商户务必添加以下校验：
    1、需要验证该通知数据中的out_trade_no是否为商户系统中创建的订单号，
	2、判断total_amount是否确实为该订单的实际金额（即商户订单创建时的金额），
	3、校验通知中的seller_id（或者seller_email) 是否为out_trade_no这笔单据的对应的操作方（有的时候，一个商户可能有多个seller_id/seller_email）
	4、验证app_id是否为该商户本身。
	*/
            if (signVerified) {//验证成功
                //商户订单号
                String out_trade_no = new String(request.getParameter("out_trade_no").getBytes("ISO-8859-1"), "UTF-8");

                //支付宝交易号
                String trade_no = new String(request.getParameter("trade_no").getBytes("ISO-8859-1"), "UTF-8");
                //实际收到的金额
                String receipt_amount = new String(request.getParameter("receipt_amount").getBytes("ISO-8859-1"), "UTF-8");

                //交易状态
                String trade_status = new String(request.getParameter("trade_status").getBytes("ISO-8859-1"), "UTF-8");

                if (trade_status.equals("TRADE_SUCCESS")) {//代表支付成功
                    Bill bill = billService.getBillByNum(out_trade_no);
                    //判断该笔订单是否在商户网站中已经做过处理
                    //如果没有做过处理，根据订单号（out_trade_no）在商户网站的订单系统中查到该笔订单的详细，并执行商户的业务程序
                    //如果有做过处理，不执行商户的业务程序
                    if (bill == null) {//订单不存在
                        out.println("fail");
                        return;
                    } else {
                        if (bill.getStatus() == AdminConstant.PAY_SUCCESS) {//已经处理过的订单
                            out.println("success");//告诉支付宝不要在回调
                            return;
                        }
                        //验证seller_id是不是自己，appid是哪一个，用来区分是公司的哪个应用收的钱 略
                        //验证支付金额是否正确
                        //BigDecimal amount = BigDecimal.valueOf(Float.valueOf(receipt_amount)) ;//元转成分
                        // Float amount=Float.valueOf(receipt_amount)*100;
                        BigDecimal decimal = new BigDecimal(receipt_amount);
                        decimal = decimal.multiply(new BigDecimal(100));//元转分
                        if (decimal.intValue() == bill.getAmount().intValue()) {//验证金额是否一致
                            bill.setStatus(AdminConstant.PAY_SUCCESS);
                            bill.setResultDate(new Date());
                            bill.setTradeNum(trade_no);
                            bill.setPayResult(trade_status);
                            billService.updateBill(bill);
                            out.println("success");
                            return;
                        }
                    }
                    //注意：
                    //付款完成后，支付宝系统发送该交易状态通知
                }
            } else {//验证失败
                out.println("fail");
                //调试用，写文本函数记录程序运行情况是否正常
                //String sWord = AlipaySignature.getSignCheckContentV1(params);
                //AlipayConfig.logResult(sWord);
            }
        } catch (IOException e) {
            e.printStackTrace();
        } catch (AlipayApiException e) {
            e.printStackTrace();
        }
    }

    @RequestMapping("return.html")
    public void success(HttpServletRequest request, HttpServletResponse response) {
        try {
            PrintWriter out = response.getWriter();
            //获取支付宝GET过来反馈信息
            Map<String, String> params = new HashMap<String, String>();
            Map<String, String[]> requestParams = request.getParameterMap();
            for (Iterator<String> iter = requestParams.keySet().iterator(); iter.hasNext(); ) {
                String name = (String) iter.next();
                String[] values = (String[]) requestParams.get(name);
                String valueStr = "";
                for (int i = 0; i < values.length; i++) {
                    valueStr = (i == values.length - 1) ? valueStr + values[i]
                            : valueStr + values[i] + ",";
                }
                //乱码解决，这段代码在出现乱码时使用
                valueStr = new String(valueStr.getBytes("ISO-8859-1"), "utf-8");
                params.put(name, valueStr);
            }

            boolean signVerified = AlipaySignature.rsaCheckV1(params, AlipayConfig.alipay_public_key, AlipayConfig.charset, AlipayConfig.sign_type); //调用SDK验证签名

            //——请在这里编写您的程序（以下代码仅作参考）——
            if (signVerified) {
                //商户订单号
                String out_trade_no = new String(request.getParameter("out_trade_no").getBytes("ISO-8859-1"), "UTF-8");

                //支付宝交易号
                String trade_no = new String(request.getParameter("trade_no").getBytes("ISO-8859-1"), "UTF-8");

                //付款金额
                String total_amount = new String(request.getParameter("total_amount").getBytes("ISO-8859-1"), "UTF-8");

                out.println("trade_no:" + trade_no + "<br/>out_trade_no:" + out_trade_no + "<br/>total_amount:" + total_amount);
            } else {
                out.println("验签失败");
            }
        } catch (IOException e) {
            e.printStackTrace();
        } catch (AlipayApiException e) {
            e.printStackTrace();
        }
    }
}
